JPH0759122A - Automatic adjustment device and automatic conversion circuit - Google Patents

Abstract

PURPOSE:To attain accurate adjustment by using an optical fiber so as to send an adjustment object value thereby sending/receiving a signal to/from a device to be adjusted with immunity to external noise. CONSTITUTION:A picture displayed on a television receiver 101 carried by a belt conveyor 103 is picked up by a CCD camera 6 and the picked up image is sent to a picture measurement section 9. A computer 1 decides required numeral values for refreshing of each IC in the television receiver 101 based on the sent picture data. The numeral data are converted into a serial electric signal by a serial bus interface 2, converted into an optical signal by a second electrooptical converter 3 and the optical signal is fed to a 1st electrooptical converter 5 through an optical fiber 4. The serial electric signal converted by the 1st electrooptical converter 5 is sent to the television receiver 101 through a bus line 102.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic adjusting device for automatically adjusting a product having a serial bus line while communicating with the serial bus line of the product in a manufacturing process for manufacturing the product. Regarding The present invention also relates to an automatic conversion circuit suitable for use in the automatic adjustment device.

[0002]

2. Description of the Related Art Conventionally, for example, in the manufacturing process of various industrial products, when carrying out various assembling operations and adjusting operations one after another while conveying semi-finished products in the middle of the manufacturing process by a belt conveyor, An automatic adjusting device is used which is arranged beside the conveyor and performs the adjusting work.

This automatic adjusting device is configured to have a signal processing circuit and various adjusting units, measuring units, display units and the like controlled by the signal processing circuit. When the device to be adjusted, which is the semi-finished product, is a device having a serial bus line, this automatic adjusting device receives a signal output from the serial bus line and monitors the state of the device to be adjusted. While doing the adjustment work. Then, this automatic adjustment device sends information about the adjustment result and the like to another automatic adjustment device that controls the work of the next process. Further, these automatic adjustment devices transmit information to a signal processing circuit that manages and controls the entire process.

In such a case, the reception of a signal from the serial bus line and the transmission of information between a plurality of automatic adjusting devices and a signal processing circuit are carried out in a communication format such as RS232C, RS422, GPIB or the like. Via the power transmission wire. A so-called shielded wire or twisted wire is used as the power transmission wire.

[0005]

By the way, as described above, in the automatic adjustment device configured to receive the information signal from the serial bus line of the device to be adjusted, the reception of the serial bus line from the shielded line is performed. If it is carried out via the serial bus line, the capacity load of the serial bus line will increase. Further, if this reception is performed via the twisted wire, it is likely to be affected by external noise, and good signal transmission may not be performed.

If the device to be adjusted is a device having a high voltage circuit such as a television set, discharge may occur in the cathode ray tube or in the high voltage circuit. In such a case, if the shield wire or the twisted wire is used to receive the information signal from the serial bus line, a large pulse current may be generated in the serial bus line. However, there is a risk of malfunction or destruction.

When the standards of the serial bus line of the device to be adjusted and the serial bus line of the automatic adjusting device are different, protocol conversion by a dedicated IC (integrated circuit) such as a gate array or a CPU is required, This complicates the entire manufacturing system including the automatic adjusting device.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and even in the case of adjusting an adjusted device configured to have serial bus lines of different standards, It is an object of the present invention to provide an automatic adjustment device that can realize simplification and can perform accurate adjustment work by performing reliable high-speed transmission of information signals.

Another object of the present invention is to provide an automatic conversion circuit suitable for use in constructing the above automatic adjusting device.

[0010]

In order to solve the above-mentioned problems and achieve the above-mentioned object, an automatic adjusting apparatus according to the present invention is connected to a serial bus line of an apparatus to be adjusted and outputs an electric signal from this serial bus line. First electric-optical conversion means for converting the signal into an optical signal and for converting the supplied optical signal into an electric signal and sending the electric signal to the serial bus line, and one end side is connected to the first electric-optical conversion means. This first
And an optical fiber for transmitting and receiving an optical signal to and from the electro-optical converting means, and the light connected to the other end of the optical fiber to receive the light guided to the optical fiber to be converted into an electrical signal and supplied. Second electric-optical converting means for converting the electric signal to an optical signal and sending it to the optical fiber, and an adjustment target value is determined based on the electric signal output by the second electric-optical converting means, and the adjustment is performed. An electric signal corresponding to the target value is supplied to the second electric-
And a control means for adjusting the device to be adjusted by sending it to the light converting means.

According to the present invention, in the above automatic adjusting device, the control means sets a factory setting for supplying to the master controller an optimum value for the master controller of the device to be adjusted to perform a refresh operation. I decided to do it.

Further, according to the present invention, in each of the automatic adjusting devices, the device to be adjusted is a television device, and is provided with an image pickup means and an image measuring section for processing an image signal output from the image pickup means. It is what

Further, in the present invention, in each of the above-mentioned automatic adjusting devices, the device to be adjusted is a mounting board, and the circuit pattern and the above-mentioned circuit pattern are connected via a contact pin whose tip portion abuts on the circuit pattern of the mounting board. The signal is exchanged with the first electro-optical converting means.

The automatic conversion circuit according to the present invention is connected to the first bidirectional bus line and transmits the signal output from the first bidirectional bus line to the first unidirectional line. A buffer element and a signal which is connected to the first bidirectional bus line and sent from a second unidirectional line is transmitted to the first bidirectional bus line and is output to the first buffer element. A second buffer element which is switched in response to the first unidirectional line and the second unidirectional line.
Third and fourth buffer elements connected in series with the second bidirectional bus line and transmitting the signal sent from the first unidirectional line to the second bidirectional bus line, A signal which is connected to a second bidirectional bus line and which transmits a signal output from the second bidirectional bus line to the second unidirectional line and is switched according to the output of the third buffer element. 5 buffer elements.

[0015]

In the automatic adjusting device according to the present invention, the first electro-optical converting means connected to the serial bus line of the device to be adjusted converts an electric signal output from the serial bus line into an optical signal. The supplied optical signal is converted into an electric signal and sent to the serial bus line, and the optical fiber whose one end side is connected to the first electric-optical converting means is connected to the first electric-optical converting means. The optical signal is transmitted and received by the second electro-optical conversion means connected to the other end side of the optical fiber, the light guided to the optical fiber is received and converted into an electric signal, and the supplied electric power is supplied. The signal is converted into an optical signal, the control means determines an adjustment target value based on the electric signal output by the second electro-optical conversion means, and the electric signal corresponding to the adjustment target value is output as the second electric- By sending to the light conversion means Since the adjustment of the adjustable device,
Signals can be exchanged with the device to be adjusted without being affected by external noise.

Further, in the automatic adjustment device, the control means performs a factory setting for supplying an optimum value for the master controller of the device to be adjusted to perform a refresh operation to the master controller. can do.

Further, in the above automatic adjusting apparatus, when the apparatus to be adjusted is a television apparatus, and it is provided with an image pickup means and an image measuring section for processing an image signal output from the image pickup means, The television device can be adjusted while the display image of the television device is captured by the image capturing means.

Further, in the automatic adjustment device, the device to be adjusted is used as a mounting substrate, and the circuit pattern and the first electro-optical device are connected via a contact pin whose tip portion abuts on the circuit pattern of the mounting substrate. In the case of exchanging a signal with the conversion means, an electric signal can be directly taken out from the circuit formed on the mounting board to adjust the circuit.

Further, in the automatic conversion circuit according to the present invention, the first bidirectional bus line passes through the first buffer element, the first unidirectional line, the third and fourth buffer elements, and the second buffer element. When signal transmission is performed to the bidirectional bus line, the signal transmitted from the second bus line to the first bidirectional bus line via the second unidirectional line passes through the fifth line. And the second buffer element is switched in accordance with the outputs of the third and first buffer elements to cut off the signal, and the first bidirectional bus line is separated from the second bidirectional bus line. In the state of waiting for signal transmission, the fifth and second buffer elements are switched and are in a state of transmitting signals, so that the signals transmitted between the first and second bidirectional bus lines are transmitted. Dedicated and receiving It is separated into two unidirectional lines use.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. The automatic adjusting device according to the present invention is shown in FIG.
As shown in FIG. 5, the device to be adjusted is mainly configured to have a serial bus line.

The device to be adjusted is configured as the television device 101 as shown in FIG. 1 or the mounting substrate 105 as shown in FIG. 2, and as shown in FIG. It has a serial bus line composed of 114 and a clock line 115. The master controller (CP
U) 107 and the non-volatile memory 108 are connected. A plurality of ICs are connected to this serial bus line.
(Integrated circuit) 109, 110, 111, 112, 113
(IC-1, IC-2, IC-3, IC-4, IC-
5) is connected. These ICs 109, 110,
Reference numerals 111, 112, 113 each control a predetermined function, and execute various functions in the device to be adjusted.
of

The master controller 107 receives the ICs 109 and 11 via the serial bus line.
It controls 0, 111, 112, 113 to instruct execution of the above-mentioned various functions.

Further, the master controller 107
Periodically reads the data written in the non-volatile memory 108, and the ICs 109, 110,
The ICs 109, 110, 111, which correspond to the data necessary for executing a predetermined function in the 111, 112, 113,
A refresh operation for writing to 112 and 113 is performed. By performing this refresh operation, each of the above ICs
109, 110, 111, 112, 113 can accurately execute a predetermined function. This refresh operation is performed via the serial bus line.

In order for the refresh operation to be performed accurately, it is necessary to write appropriate data for the ICs 109, 110, 111, 112, 113 in the nonvolatile memory 108. In this way, each of the ICs 109, 1
Writing data corresponding to 10, 111, 112, 113 is called factory setting. This factory setting is applied to each of the ICs 109, 110, 111, 11 in the manufacturing process of the device to be adjusted.
The optimum values are determined by measuring the characteristics of each of the ICs 2, 113, and these optimum values are set to the respective ICs 109, 110, 111, 1
It is performed by writing it in the nonvolatile memory 108 in association with 12, 113. This factory setting can be performed by the automatic adjusting device according to the present invention.

As shown in FIGS. 1 to 3, the automatic adjusting apparatus according to the present invention includes a computer 1 serving as control means, a serial bus interface 2 connected to the computer 1, first and second electrical devices. The first and second electro-optical converting devices 5 and 3 which are the optical converting means. An optical fiber 4 connects between the electric-optical conversion devices 5 and 3.

The computer 1 exchanges electric signals with the second electro-optical conversion device 3 via the serial bus interface 2. This second electricity
The light conversion device 3 is configured to include a plurality of light emitting / receiving elements 18 and 19, a light emitting element 20, and a transmission / reception switching circuit 17. Each of the light emitting / receiving elements 18 and 19 is configured to have a light emitting element such as an LED which converts an electric signal into an optical signal and a light receiving element such as a photodiode which converts an optical signal into an electric signal. The light emitting element 20 is an LED or the like that converts an electric signal into an optical signal.

The respective light emitting / receiving elements 18 and 19 are connected to the serial bus interface 2 via the transmission / reception switching circuit 17. In addition, the light emitting element 2
0 is connected to the serial bus interface 2. When the computer 1 transmits an electric signal for control and the transmission / reception switching circuit 17 is switched to the transmission side, the light emitting / receiving elements 18 and 19 and the light emitting element 20 are supplied with the electric signal, It emits an optical signal according to an electric signal. This optical signal is sent to the first electro-optical conversion device 5 via the optical fiber 4. One of the light emitting / receiving elements 18 and 19 is for a data line, and the other is for a clock line. In addition, the light emitting device 20 is used to transmit data for factory setting.

The light emitting and receiving elements 18 and 19 are
When the transmission / reception switching circuit 17 is switched to the reception side, the optical signal received via the optical fiber 4 is converted into an electric signal and sent to the serial bus interface 2. The optical fiber 4 is the first to fourth fibers 4a, 4b, 4 connected to the light emitting side (T) and the light receiving side (R) of the light emitting and receiving elements 18 and 19, respectively.
c, 4d and a fifth fiber 4e connected to the light emitting element 20.

The first electro-optical conversion device 5 includes light emitting / receiving elements 21 and 22 having the same structure as the light emitting / receiving elements 18 and 19, a light receiving element 23, and the light emitting / receiving elements 2 respectively.
1 and 22, and a transmission / reception switching circuit 24 connected thereto. The transmission / reception switching circuit 24 and the light receiving element 23 are connected to a serial bus line of the television device 101 or the mounting board 105 via a bus line 102. That is, the transmission / reception switching circuit 24 is connected corresponding to the data line 114 and the clock line 115, and the light receiving element 23 is connected to the factory setting control line 116 connected to the main controller 107. It

The serial bus line is adapted to perform bidirectional transmission, but the transmission / reception switching circuit 1 is used.
Since 7 and 24 distribute the routes on the transmitting side and the receiving side, unidirectional communication may be performed in each of the fibers 4a, 4b, 4c and 4d.

When the controlled device is the television device 101 as shown in FIG. 1, an image measuring section 9 is connected to the computer 1. A CCD (solid-state image pickup device) camera 6 serving as an image pickup unit is connected to the image measuring unit 9 via a video cable 8.
The CCD camera 6 is configured so that an image formed by the taking lens 7 is picked up by a CCD, converted into an electric signal, and sent to the image measuring section 9. The CCD camera 6 is installed at a predetermined position where a display image of the television device 101 conveyed by the belt conveyor device 103 can be picked up.

The belt conveyor device 103 is
The television device 10 includes a frame portion and an endless conveyor belt portion 104 movably arranged on the frame portion, and the television device 10 is provided on the conveyor belt 104.
1 and the device to be adjusted such as the mounting board 105 can be placed and transported.

The factory setting for the television apparatus 101 is as follows. First, the television apparatus 1 is transported to a position where the adjustment is performed by the automatic adjusting apparatus.
The image displayed by 01 is captured by the CCD camera 6. The image captured by the CCD camera 6 is used as an image signal in the image measuring unit 9 described above.
And is subjected to predetermined signal processing to be image data.

The computer 1 receives the image data and determines the numerical value required for the refresh operation for each IC in the television apparatus 101 based on the image data. Numerical data indicating the numerical values thus determined by the computer 1 are sent to the serial bus interface 2.

The numerical data sent to the serial bus interface 2 is converted into a serial electric signal by the serial bus interface 2 and sent to the second electro-optical conversion device 3. The second electro-optical converting device 3 converts the sent serial electric signal into an optical signal and sends it to the first electro-optical converting device 5 through the optical fiber 4.

The second electro-optical conversion device 5 is arranged in the vicinity of the belt conveyor device 103 and converts the transmitted optical signal into a serial electric signal. The serial electric signal converted by the first electro-optical conversion device 5 is connected to the serial bus line of the television device 101 via the bus line 102. The numerical data is sent to the master controller 107 via the factory setting control line 116 of the television apparatus 101, and the master controller 1
It is written in the non-volatile memory 108 under the control of 07.

When such factory setting is performed, first, the control line 116 for factory setting is set to low level. Then,
The master controller 107 is set to the factory setting mode, opens the serial bus line, and is in a state of receiving data supplied from the outside. When all the numerical data have been transferred, the computer 1 sets the factory setting control line 116 to the low level again to notify the master controller 107 of the end of automatic adjustment. The master controller 107 occupies the bus line again and is ready to perform the refresh operation. In this way, the factory setting is completed.

The television device 101 writes numerical data into the non-volatile memory 108 that optimizes image quality factors such as color shift, screen size, and image distortion characteristics by the above factory settings.

Further, the device to be adjusted is the mounting substrate 10.
In the case of 5, the signal processing unit (A / D conversion unit) 13 is connected to the computer 1 as shown in FIG. A buffer amplifier and multiplexer circuit 11 is connected to the signal converting unit 13 via a signal cable 12. This buffer amplifier and multiplexer circuit 1
1 is connected to a predetermined location on the circuit pattern of the mounting board 105 via a plurality of contact pins 15.

Each of the contact pins 15 is supported by a pressing plate 14 supported by a column 16 arranged on the belt conveyor device 103 so that its base end side can advance and retreat, and its tip end side faces downward. . The mounting board 105 can be moved up and down on the belt conveyer device 103, and when it is conveyed to a position below the pressing plate 14, the mounting board 105 is lifted to move the contact pins 1 to each other.
5 is contacted at a predetermined position on the circuit pattern.

The factory setting for the mounting board 105 is as follows. First, the circuit pattern of the mounting board 105 conveyed to the position where the adjustment is performed by the automatic adjusting device is performed through the contact pins 15 and the buffer amplifier and multiplexer circuit 11 is connected. And the signal processing unit 1
This is done by connecting to 3. These contact pins 1
The signal obtained via 5 is subjected to predetermined signal processing in the signal processing section 13 and sent to the computer 1.

The computer 1 includes the signal processing unit 1
3 sends data, and based on this data, the numerical value necessary for the refresh operation for each IC in the mounting board 105 is determined. Numerical data indicating the numerical values thus determined by the computer 1 are sent to the serial bus interface 2.

The numerical data sent to the serial bus interface 2 is converted into a serial electric signal by the serial bus interface 2 and sent to the second electro-optical conversion device 3. The second electro-optical converting device 3 converts the sent serial electric signal into an optical signal and sends it to the first electro-optical converting device 5 through the optical fiber 4.

The second electro-optical converting device 5 is arranged in the vicinity of the belt conveyor device 103, and converts the sent optical signal into a serial electric signal. The serial electric signal converted by the first electro-optical conversion device 5 is connected to the serial bus line of the mounting board 105. The numerical data is sent to the master controller 107 via the factory setting control line 116 of the mounting board 105, and under the control of the master controller 107, the nonvolatile memory 108 is controlled.
Written in.

Also in this case, first, the factory setting control line 116 is set to the low level,
The master controller 107 is in a state of receiving data supplied from the outside. When all the numerical data have been transferred, the computer 1 sets the control line 116 for factory setting to the low level again. Then, the master controller 107 occupies the bus line again and is ready to perform the refresh operation. In this way, the factory setting is completed.

Numerical data for optimizing various circuit operations and the like are written in the non-volatile memory 108 of the mounting board 105 by the above factory setting.

The automatic conversion circuit according to the present invention can be used as the transmission / reception switching circuits 17 and 24 in the above embodiment, and as shown in FIG. 5, the first to fifth buffer elements 32a. , 32b, 35a, 35
b, 35c.

The first buffer element 32a is connected to the first bidirectional bus line 31, and transmits the signal output from the first bidirectional bus line 31 to the first unidirectional line 33. The second buffer element is the first buffer element.
Connected to the bidirectional bus line 31 of the first bidirectional bus line 3
1 and is switched according to the output of the first buffer element 32a. The third buffer element 35a and the fourth buffer element 35b
Is connected in series between the first unidirectional line 33 and the second bidirectional bus line 36, and the signal sent from the first unidirectional line 33 is connected to the second bidirectional bus line 36. Three
6 is transmitted. The fifth buffer element 35c
Is connected to the second bidirectional bus line 36 and transmits a signal output from the second bidirectional bus line 36 to the second unidirectional line 34, and at the same time, the third buffer element 35a It is switched according to the output.

The first and second buffer elements 32a,
32b outputs "H" when an "H" (high level) signal is input. In addition, the second buffer element 32
b has a so-called active-high switching function, and closes the circuit when the output of the first buffer element 32a is "L" (low level) and opens the circuit when it is "H".

The third and fourth buffer elements 35a,
Reference numeral 35b is an inverter element that outputs "L" when a "H" signal is input. Further, the fifth buffer element 35c has a so-called active low switching function, and closes the circuit when the output of the third buffer element 35a is "H", and closes it when it is "L". Open the circuit.

In this automatic conversion circuit, the side connected to the first bidirectional bus line 31 is normally "L", and at this time, the first bidirectional bus line 31.
Further, a signal is transmitted to the second bidirectional bus line 36 via the first unidirectional line 33. That is, when the input of the first buffer element 32a is "L", the output of the first buffer element 32a is also "L", and the second buffer element 32b is closed. At this time, the third
Since the input of the buffer element 35a is "L", the output of the third buffer element 35a is "H", and the fifth buffer element 35c is closed. Also,
The output of the fourth buffer element 35b is "L". Therefore, at this time, no signal is transmitted from the second bidirectional bus line 36 side to the first bidirectional bus line 31.

At this time, the first bidirectional bus line 3
The signal sent from the 1st side changes between "H" and "L".
In particular, the third and fourth buffer elements 35a, 35b
Due to the delay due to the inverter element, the second and fifth buffer elements 32b and 35c are not opened by "H" in the output signal.

In this automatic conversion circuit, when the side connected to the first bidirectional bus line 31 is kept at "H" for a certain time or longer, the first bidirectional bus line 31 becomes The signal is received from the second bidirectional bus line 36. That is, when the input of the first buffer element 32a becomes "H", the output of the first buffer element 32a also becomes "H", and the second buffer element 32b is opened. At this time, since the input of the third buffer element 35a becomes "H", the output of the third buffer element 35a becomes "L".
And the fifth buffer element 35c is opened. The output of the fourth buffer element 35b becomes "H". Therefore, at this time, signal transmission can be performed from the second bidirectional bus line 36 side to the first bidirectional bus line 31 via the second unidirectional line 34.

As each of the unidirectional lines 33 and 34, a line which is photoelectrically converted by a light emitting element and a light receiving element and is transmitted and received through an optical fiber can be used.
Further, as each of the unidirectional lines 33 and 34, a line that transmits and receives via a photo isolator having a light emitting element and a light receiving element can also be used.

In this automatic conversion circuit, since signal transmission between two bidirectional bus lines can be performed via two unidirectional lines, optical transmission via an optical fiber or a photoisolator as the unidirectional line can be performed. Can be used
The input / output unit of each bidirectional bus line can be electrically separated. Also, by using this automatic conversion circuit, it is possible to improve the drive capability and reduce the impedance of the bidirectional bus line.

This automatic conversion circuit can be used as the transmission / reception switching circuits 17 and 24 in the above-mentioned automatic adjustment device. In this case, as shown in FIG. 6, the transmission / reception switching circuit 2 on the first electro-optical conversion device 5 side.
4, the third to fifth buffer elements 35a, 3
Using the first switching circuit 38 composed of 5b and 35c,
Transmission / reception switching circuit 1 on the side of the second electro-optical conversion device 3
7, the first and second buffer elements 32a, 3
A second switching circuit 41 consisting of 2b is used.

This automatic adjusting device is the same as that in the embodiment described above with reference to FIG. 3, the bidirectional bus line of the device to be adjusted 37, the first switching circuit 38, the light emitting and receiving element 39, the transmitting and receiving devices. An optical fiber 40 paired for reception, a light emitting and receiving element, the second switching circuit 41,
Serial conversion unit (serial bus interface) 42
The bidirectional bus line and the measurement control computer 43 are connected in this order. Further, instead of the light emitting / receiving element 39 and the optical fiber 40, the photo isolator 4 is used.
4 may be used. The light emitting / receiving element 39, the optical fiber 40, and the photo isolator 44 form the unidirectional lines 33, 34.

The automatic conversion circuit according to the present invention is not limited to the above-mentioned automatic adjustment device, and can be used in various devices as a circuit for connecting two bidirectional bus lines.

[0059]

As described above, in the automatic adjusting device according to the present invention, the first electro-optical converting means connected to the serial bus line of the device to be adjusted outputs the electric signal from this serial bus line. Is converted into an optical signal and the supplied optical signal is converted into an electric signal and sent to the serial bus line, and the optical fiber whose one end side is connected to the first electric-optical conversion means is the first electric An optical signal is transmitted to and received from the optical converting means, and the second electro-optical converting means connected to the other end of the optical fiber receives the light guided to the optical fiber and converts it into an electric signal. In addition to the conversion, the supplied electric signal is converted into an optical signal, and the control means controls the second signal.
The adjustment target value is determined based on the electric signal output from the electro-optical converting means and the electric signal corresponding to the adjustment target value is sent to the second electro-optical converting means to adjust the device to be adjusted. To do.

Therefore, in the automatic adjusting apparatus according to the present invention, it is possible to exchange signals with the apparatus to be adjusted without being affected by external noise.

Further, in the automatic adjustment device, the control means performs a factory setting for supplying an optimum value for the master controller of the device to be adjusted to perform a refresh operation to the master controller. can do.

In the automatic adjustment apparatus, if the apparatus to be adjusted is a television apparatus, and the image pickup section and the image measuring section for processing the image signal output from the image pickup section are provided, The television device can be adjusted while the display image of the television device is captured by the image capturing means.

Further, in the automatic adjustment device, the device to be adjusted is used as a mounting substrate, and the circuit pattern and the first electro-optical device are connected via a contact pin whose tip portion abuts on the circuit pattern of the mounting substrate. In the case of exchanging a signal with the conversion means, an electric signal can be directly taken out from the circuit formed on the mounting board to adjust the circuit.

That is, the present invention can realize simplification of the production system even when adjusting the device to be adjusted which has serial bus lines of different standards, and the information signal It is possible to provide an automatic adjustment device that can perform accurate adjustment work by performing reliable high-speed transmission.

In addition, in the automatic conversion circuit according to the present invention, the second bidirectional bus line passes through the first buffer element, the first unidirectional line, the third and fourth buffer elements, and the second buffer element. When signal transmission is performed to the bidirectional bus line, the signal transmitted from the second bus line to the first bidirectional bus line via the second unidirectional line passes through the fifth line. And the second buffer element is switched in accordance with the outputs of the third and first buffer elements to cut off the signal, and the first bidirectional bus line is separated from the second bidirectional bus line. In the state of waiting for the signal transmission, the fifth and second buffer elements are switched to be in the state of transmitting the signal.

Therefore, in this automatic conversion circuit, the signal transmitted between the first and second bidirectional bus lines can be separated into two unidirectional lines dedicated to transmission and reception.

That is, the present invention can provide an automatic conversion circuit suitable for use in constructing the automatic adjusting apparatus according to the present invention.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a television device being manufactured is being adjusted by an automatic adjustment device according to the present invention.

FIG. 2 is a side view showing a state where the mounting substrate being manufactured is being adjusted by the automatic adjusting apparatus.

FIG. 3 is a plan view showing a connection state of optical fibers in the automatic adjustment device.

FIG. 4 is a block diagram showing a configuration of an adjusted device having a serial bus line.

FIG. 5 is a circuit diagram showing a configuration of an automatic conversion circuit according to the present invention.

FIG. 6 is a circuit diagram showing a state in which the automatic conversion circuit is applied to an automatic adjustment device.

[Explanation of symbols]

 1 Computer 2 Serial Bus Interface 3 Second Electro-Optical Converter 4 Optical Fiber 5 First Electro-Optical Converter 6 CCD Camera 7 Photographic Lens 9 Image Measuring Section 15 Contact Pin 31 First Bidirectional Bus Line 32a 1st buffer element 32b 2nd buffer element 33 1st unidirectional line 34 2nd unidirectional line 35a 3rd buffer element 35b 4th buffer element 35c 5th buffer element 36 2nd bidirectional bus line 101 television device 105 mounting board 107 master controller 114 data line 115 clock line

Claims (5)

[Claims] 1. A serial bus line which is connected to a serial bus line of a device to be adjusted, converts an electric signal output from the serial bus line into an optical signal, and converts the supplied optical signal into an electric signal. A first electro-optical converting means for sending to the first electro-optical converting means, and an optical fiber having one end connected to the first electro-optical converting means and for exchanging an optical signal with the first electro-optical converting means. A second optical fiber connected to the other end of the optical fiber, receiving the light guided to the optical fiber and converting the light into an electric signal, and converting the supplied electric signal into an optical signal to send to the optical fiber Of the electric-optical conversion means and the electric signal output from the second electric-optical conversion means, and the adjustment target value is determined based on the electric signal output from the second electric-optical conversion means. By sending to
An automatic adjustment device comprising: a control unit that adjusts the device to be adjusted. 2. The automatic adjusting device according to claim 1, wherein the control means performs a factory setting for supplying an optimum value for a master controller of the device to be adjusted to perform a refresh operation to the master controller. 3. The automatic adjustment according to claim 1 or 2, wherein the device to be adjusted is a television device and comprises an image pickup means and an image measuring section for processing an image signal output from the image pickup means. apparatus. 4. The device to be adjusted is a mounting board, and the device between the circuit pattern and the first electro-optical converting means is connected via a contact pin whose tip portion abuts on the circuit pattern of the mounting board. The automatic adjusting device according to claim 1 or 2, which transmits and receives a signal. 5. A first buffer element connected to a first bidirectional bus line for transmitting a signal output from the first bidirectional bus line to a first unidirectional line, and both the first buffer element and the first buffer element. A second bus connected to the first bus line and transmitting a signal sent from the second unidirectional line to the first bidirectional bus line, and being switched according to the output of the first buffer element. Of the buffer element and the first unidirectional line and the second bidirectional bus line are connected in series, and the signal sent from the first unidirectional line is supplied to the second bidirectional bus line. And a third buffer element for transmitting to the second bidirectional bus line, and a signal output from the second bidirectional bus line and transmitted to the second unidirectional line. Together with the third buffer element An automatic conversion circuit including a fifth buffer element that is switched according to the output of the.